Image-plane analysis of n-point-mass lens critical curves and caustics

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10321579" target="_blank" >RIV/00216208:11320/15:10321579 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/0004-637X/806/1/63" target="_blank" >http://dx.doi.org/10.1088/0004-637X/806/1/63</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0004-637X/806/1/63" target="_blank" >10.1088/0004-637X/806/1/63</a>

Result language
angličtina
Original language name
Image-plane analysis of n-point-mass lens critical curves and caustics
Original language description
The interpretation of gravitational microlensing events caused by planetary systems or multiple stars is based on the n-point-mass lens model. The first planets detected by microlensing were well described by the two-point-mass model of a star with one planet. By the end of 2014, four events involving three-point-mass lenses had been announced. Two of the lenses were stars with two planetary companions each; two were binary stars with a planet orbiting one component. While the two-point-mass model is well understood, the same cannot be said for lenses with three or more components. Even the range of possible critical-curve topologies and caustic geometries of the three-point-mass lens remains unknown. In this paper we provide new tools for mapping thecritical-curve topology and caustic cusp number in the parameter space of n-point-mass lenses. We perform our analysis in the image plane of the lens. We show that all contours of the Jacobian are critical curves of re-scaled versions of
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Project
<a href="/en/project/GAP209%2F10%2F1318" target="_blank" >GAP209/10/1318: Gravitational microlensing caustics and extended sources</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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